Metal kite-frame.



No. 724,402. PATENTED MAR. 31 1903. J. H. STEIN.

METAL KITE FRAME. APPLIOATION FILED JULY 5, 1902.

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UNITED STATES PATENT OFFICE.

JOHN H. STEIN, OF DETROIT, MICHIGAN.

METAL KlTE-FRAM E.

SPECIFICATION forming part of Letters Patent No. 724,402, dated March 31, 1903.

Application filed July 5, 1902- Serial No. 114,373. N m l-l To all whom it may concern:

Be it known that I, JOHN H. STEIN, a citizen of the United States, residing at Detroit,

in the county of Wayne, State of Michigan,

have invented certain new and useful Improvements in Metal Kite-Frames; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a metallic kiteframe; and it consists in the construction and arrangement of parts hereinafter fully set forth, and pointed out particularly in the claims.

The object of the invention is to provide a kite-frame of metal which shall be light and at the same time possessed of sufficient strength to withstand the pressure of the air thereon, the arrangement being such as to enable the ribs of the kite to lie together in the same horizontal plane when not in use, so as to render it compact for shipment.

The above object is attained by the structure illustrated in the accompanying drawvolving my invention.

ings, in which Figure 1 is a plan view of a kite-frame in- Fig. 2 is a view of the frame with the ribs thereof lying in the same horizontal plane as when folded for shipment. Fig. 3 is a side elevation of one of the ribs of the frame. Fig. 4 is an elevation at right angles to Fig. 3. Fig. 5 is a plan view as looking down upon the top of the frame with the ribs spread in position for use, as shown in Fig. 1. Fig. 6 is an enlarged transverse section as on line 6 6 of Fig. 2.

To produce a metal kite-frame that is light enough to insure the requisite buoyancy and at the same time strong enough to withstand the wind-pressure thereon has been difficult of attainment, owing to the fact that ordinarily a metal rib of the requisite strength is too heavy for the purpose required. I overcome the difficulty of weight by forming the ribs of thin metal strips, that are folded upon themselves so as to render the ribs U-shaped in cross-section, as clearly shown in Fig. 6. By shaping the ribs as described very light metal may be used which is sufficiently rigid for the desired purpose and enables a kite to be made which possesses both strength and lightness.

I preferably form the frame of a cross-rib 1 and two diagonal ribs 2 and 3, respectively, which are pivoted together and to the crossrib by means of a transverse bolt 4, which passes through said ribs and receives a nut 5 on the end thereof. In the outer ends of the ribs are formed eyes 6, through which passes the marginal cord 7, that forms the outline of the kite.

The ribs of the kite are formed of metal bars, which are preferably U-shaped in crosssection, as shown in Fig. 6, which are adapted to fit one into the other when said bars are placed parallel and in which position they may be firmly held by tightening the nut 5, so as to draw the ribs together, enabling the ribs to be securely maintained in place during shipment. When desired for use, the nut 5 is loosened sufficiently to allow the ribs to be swung'upon the bolt 4 to their proper position, as shown in Fig. 1, when by tighten ing said nut the parts may be firmly clamped together to maintain the ribs in said position.

To allow for the attachment of the hanger or belly-band, (not shown,) the ribs are provided with apertures 8, in which said band is secured. The tail band (not shown) may be attached to the lower ends of the ribs 2 and 3 through the apertures 6 therein or in any suitable manner.

Having thus fully set forth my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. A metal kite-frame comprising thin me tallic ribs, substantially U-shaped in crosssection to allow said ribs to fit into one another when extending parallel, said ribs crossing each other and abolt passing therethrough at said point of crossing, said bolt having a nut thereon for the purpose of fastening said ribs in position when properly adjusted upon said bolt.

2. In a kite-frame, the combination of the metallic ribs adapted to fit one into the other when lying para1lel,'a bolt passing through to to receive the marginal twine, apertures for the attachment of the hangeraand means for clamping the ribs upon the bolt to lock them in position. 7

In testimony whereof I sign this specification in the presence of two witnesses.

JOHN H. STEIN.

Witnesses:

E. S. WHEELER, G. E. DAVIS. 

